The study combined the results of different studies over the last 50 years and found that spending too long in the office resulted in a 40 to 80 percent greater chance of heart disease compared to an eight hour work day.

The latest findings discovered by scientists at the Finnish Institute of Occupational Health support results from a 2011 British survey that revealed that doing more than 11 hours of work a day raised heart disease risks by 67 percent.

Lead researcher Dr. Marianna Virtanen and her team gathered data from 12 different studies going back to 1958, when researchers first suggested that working long hours could be linked to poor heart health. In total, the studies involved more than 22,000 participants, from Britain, the USA, Japan, Sweden, Finland, Denmark and the Netherlands.